Stem winding and setting watch.



W. E. PORTER.

STEM WINDING AND SETTING WATCH. APPLICATION FILED SEPT. 21,1909.

Patented Nov. 24, 1908 UNITED STATES PATENT OFFICE.

WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO NEW HAVEN CLOCK CO., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

STEM WINDING AND SETTING WATCH.

Application filed. September 21, 1908.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, WILSON E. PORTER, a citizen of the United States, residing at New Eaven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Stem-Unding and Stem-Setting Watches; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be full, clear, and exact desc iption of the same, and which said drawings constitute part of this specification, and represent, in

Eigure l a view in elevation of a watch constructed in accordance with my invention, with the dial removed. Fig. 2 a broken view looking toward the inner face of the front movement-plate. Fig. 3 a broken seclional view on the line a----. of F 1. Fig. l a broken view of the fron movement plate to show the radial slot formed for the stud of the movable stem-setting wheel.

My invention relates to an improvement in stem-winding and stem-setting watches, the object being to provide a simple, compact and reliable mechanism constructed with particular reference to relieving the dial-work of as much load as possible in its normal operation.

With these ends in view my invention consists in the construction and combination of parts as will be hereinafter described and pointed out in the claims.

in carrying out my invention as herein shown, I employ a radially movable stenr setting wheel 2 mounted upon a stud 3 passing through a radially arranged slot 4- formed in the front movement-plate and located in line with the longitudinally movable and rotatable winding and setting stem 6 which is mounted in the pendant 7 and furnished at its outer end with a crown 8 in the usual manner. The said wheel 2 bears upon and rides over the outer face of the front movement-plate 5 and is held in place by means of a washer 9 applied to the said stud and bearing upon and riding over the inner face of the said plate 5 as shown in Fig. 3. A spring 10 secured to the inner face of the plate 5 engages with the inner edge of the washer 9 and exerts a constant effort to push the same, and hence the stemsett-ing wheel 2 outward, whereby the teeth of the wheel 2 are normally demeshed from the teeth of the dial wheel 11 which is of the ordinary form and arrangement, and in constant mesh with the cannon pinion 12. The dial work of the watch is therefore relieved of the burden of idly operating the stcmsetting wheel 2. The spring 10 by pushing outward on the washer 9, as described, keeps the teeth of the stem-setting wheel 2 in constant mesh with the stem-setting pinion 13 which is mounted in the usual manner upon the inner end of the stem 6, the teeth of the wheel 2 being prevented from entering too far into the teeth of the pinion 13 by the abutment of the edge of the washer 9 against the flat inner face of the pinion 13, as shown in Fig. 8, the washer 9 being regulated in diameter accordingly.

hen it is desired to set the watch the stem 6 is pushed inward by its crown 8, whereby the wheel 2 and washer 9 are forced radially inward against the tension of the spring 10 and the wheel 2 interineshed with the dial wheel 11 into which the teeth of the wheel 2 are prevented from going too far by the abutment of the stud 3 against the inner end wall of the slot l. The inward thrust upon the stem 6 is maintained during the setting of the watch. Being relieved, the spring 10 reasserts itself and moves the wheel 2 outward into its normal position in which it is demeshed from the dial wheel 11 as shown in Fig. l. The spring 10 is not, however, relied upon for pushing the stem outward as that is done by the usual pendant-spring 14c. The outward movement of the stem 6 is limited by the engagement of the pinion 13 with the stem-winding pinion through which the stem 6 passes and with which it is coupled for rotation. The said pinion l5 bears upon the inner end of the pendant 7 and meshes into the intermediate winding wheel 16 which in turn meshes into the winding wheel, which is not shown as this present invention is not concerned with the stem-winding mechanism. The front movement plate 5 is formed with aclearance notch 17 for the reception and play of the pinion 15. The ring 18 partly covering the plate 8 forms a portion of the watch. case which, however, has nothing to do with my present invention.

1. In a stem-winding and stem-setting watch, the combination with a dial-wheel, of a radially movable stem-setting wheel, a

longitudinally movable and rotatable stem, a stein-setting pinion carried thereby, and means for maintaining the ste1n-setting wheel in constant mesh with the stem-setting pinion and demeshed from the dialwheel.

2. In a stem-setting and stem-winding watch the combination with a dial-wheel, of a radially movable stem-setting wheel, a stud therefor a washer fixed upon the inner end of the said stud, a longitudinally movable and rotatable stem, a stem-setting pinion carried thereby and interineshed with the teeth of the stem-setting wheel, and a spring engaged with the said washer for 5 specification in the presence of two subscrib- 2 ing witnesses.

WILSON E. PORTER WVitnesses:

GEORGE D. SEYMOUR, CLARA L. VVEED. 

